we are one of the leading manufacturers in this PP-R pipeline for many years,and have passed ISO9001 & ISO14001,also our PP-R pipes and fittings have first passed the strict thermal-resistant steady test (8760 hours) of Bodycote Polymer AB in China.All PP-R pipes and fittings are completely accordance with German standard DIN8077-8078.And we can produce many different colors as per your demand.